If my laptop is sitting with the screen open, live, and plugged in, and I unplug it and keep working, a moment later it will go to sleep. Even as I am typing at it.
The only solution is to close the cover, count to five, and reopen.
Is there a real solution?
I asked pmget for some log and got the following:
I've got 10.8.2 on here.
11/16/12 6:57:50 AM EST Sleep Maintenance Sleep Sleep: Using BATT (Charge:100%) 1809 secs 11/16/12 7:28:26 AM EST Sleep Maintenance Sleep Sleep: Using AC (Charge:100%) 9 secs 11/16/12 12:44:31 PM EST Sleep Clamshell Sleep Sleep: Using BATT (Charge:100%) 7 secs